CN109954971B - Laser welding auxiliary device - Google Patents
Laser welding auxiliary device Download PDFInfo
- Publication number
- CN109954971B CN109954971B CN201811591815.6A CN201811591815A CN109954971B CN 109954971 B CN109954971 B CN 109954971B CN 201811591815 A CN201811591815 A CN 201811591815A CN 109954971 B CN109954971 B CN 109954971B
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- welding
- gas
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- dust
- dust collection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention belongs to the technical field of laser welding, and particularly relates to a laser welding auxiliary device, which comprises: the frame, protection gas output device and dust arrester, the frame includes the frame diaphragm, set up the laser light through hole of vertical lining up on the frame diaphragm, with the laser welding station setting in the below of laser light through hole, the gas outlet that will protect gas transfer passage all sets up on the lateral wall that the light groove was led to laser with the dust absorption mouth of dust absorption passageway, and the dust absorption mouth setting of dust absorption passageway is in the top of protection gas transfer passage's gas outlet, stagger the gas outlet of dust absorption mouth and protection gas, let the gas outlet of protection gas be close to the welding position more. When the shielding gas output device and the dust collector are simultaneously started, even if the suction force of the dust collector is large, the shielding gas at the welding position cannot be completely sucked away, the welding position can be protected by enough shielding gas in the welding process, welding slag can be completely sucked away in the welding process, and the working efficiency of the laser welding auxiliary device and the quality of produced workpieces are improved.
Description
Technical Field
The invention belongs to the technical field of laser welding, and particularly relates to a laser welding auxiliary device.
Background
In recent years, due to the attention of people on environmental protection and the change of an automobile energy structure, the automobile power battery industry is developed at a high speed. The proportion of new energy vehicles in the market is higher and higher, and various manufacturers launch new energy vehicle types, so that the demand of the market for new energy power batteries is greatly increased. The road condition that the car went is complicated, and the battery in the car can shake the vibrations repeatedly for a long time on the road, and this has proposed very high requirement to the quality requirement of car power battery.
The laser welding is introduced into the production of power batteries as an advanced welding technology, and has the advantages of high welding speed, good welding effect, no welding consumables and the like. Because the protection of traditional welded cinder is not had in laser welding, when carrying out the welding of active metal, have certain influence to the metal outward appearance, so need blow the protection gas and protect when carrying out certain active metal laser welding and guarantee that the welding seam is even pleasing to the eye, also can reduce the influence of welding slag welding fume to welding quality simultaneously. Laser welding is as a welding mode can welding and spatters and produce welding slag unavoidably, and although welding slag has been greatly reduced compared with traditional welding, welding slag that very few welding spatters and produces still can exert an influence on the quality of battery, therefore need clear away welding slag. The laser welding slag treatment mainly comprises two ways: firstly, reduce the welding slag and produce and with the dust arrester absorption welding slag welding fume in welding process, secondly absorb the welding slag after the welding is accomplished. The best method is to reduce the generation of welding slag as much as possible, suck the welding slag away during the welding process and prevent the welding slag from being dispersed into other structures of the battery product and being difficult to clean or left hidden troubles due to omission and unremoved in the process of transferring the product to the next station after the welding is finished. By comprehensively analyzing various factors, blowing protective gas and simultaneously sucking dust during welding are the best method for treating welding slag. However, the larger the suction force of the dust collector is, the better it is for removing the welding slag, while too large a suction force may cause the shielding gas to be sucked away when the shielding gas has not yet been delivered to the welding position, and too small a suction force does not provide a good dust collecting effect.
Disclosure of Invention
The invention aims to provide a laser welding auxiliary device, and aims to solve the problems that when the laser welding auxiliary device in the prior art is used for sucking dust and blowing shielding gas, the shielding gas is sucked away when the shielding gas is not delivered to a welding position due to too large suction force of a dust collector, and the dust collecting effect is not good due to too small suction force.
In order to solve the above technical problem, the present invention is achieved by a laser welding assistance device including: the device comprises a frame, a protective gas output device and a dust collector;
the frame comprises a frame transverse plate, a laser light through hole which is vertically communicated is formed in the frame transverse plate, a workpiece to be subjected to laser welding is placed below the laser light through hole, and laser emitted by a laser welding machine irradiates the workpiece to be subjected to laser welding through the laser light through hole;
be provided with protection gas transfer passage and dust absorption passageway in the frame diaphragm, protection gas transfer passage's air inlet with protection gas output device connects, protection gas transfer passage's gas outlet sets up on the lateral wall that the unthreaded hole was led to laser, dust absorption passage's dust arrester connector with the dust arrester is connected, dust absorption passage's dust absorption mouth sets up on the lateral wall that the unthreaded hole was led to laser, just dust absorption passage's dust absorption mouth sets up the top of protection gas transfer passage's gas outlet.
Further, the laser welding assistance apparatus further includes: a shielding gas guide plate;
the protective gas guide plate is arranged between the dust suction port of the dust suction channel and the gas outlet of the protective gas conveying channel and used for enabling a height difference to be formed between the dust suction port of the dust suction channel and the gas outlet of the protective gas conveying channel in the height direction.
Further, the laser welding assistance apparatus further includes: the welding pressing block comprises a pressing bottom plate and a connecting plate;
the pressing bottom plate passes through connecting plate fixed connection in the unthreaded hole is led to the laser, set up the logical light groove of vertical link up on the pressing bottom plate, protection gas deflector lid is established on the pressing bottom plate, set up on the protection gas deflector with lead to light groove complex and lead to the light mouth, lead to the periphery of light groove with lead to the periphery cooperation of light mouth and form the protection gas outlet, the gas flow of giving vent to anger of protection gas outlet is less than the conveying gas flow of protection gas transfer passage.
Furthermore, the protective gas guide plate and the pressing bottom plate are matched to form a gas storage space, a gas outlet of the protective gas conveying channel is communicated with the gas storage space, and a protective gas outlet is communicated with the gas storage space.
Further, the peripheral edge of the notch of the light through groove of the pressing bottom plate is recessed downwards, the periphery of the light through opening extends downwards, and the recessed periphery of the light through groove and the downwardly extending periphery of the light through opening are matched to form a protective gas outlet in the peripheral direction.
Further, the laser welding assistance apparatus further includes: welding a compression cylinder;
the welding pressing cylinder is characterized in that a cylinder body of the welding pressing cylinder is fixedly installed on an external fixing body, an output part of the welding pressing cylinder is connected with the transverse plate of the rack, and the output part of the welding pressing cylinder moves along the vertical direction to drive a welding pressing block connected with the transverse plate of the rack to press or loosen a workpiece to be welded in a laser mode.
Further, the number of the welding pressing cylinders is two;
the two welding compression cylinders are respectively arranged on two sides of the transverse plate of the rack, and the output parts of the two welding compression cylinders are connected with the transverse plate of the rack.
Further, the laser welding assistance apparatus further includes: the protective gas output device, the dust collector, the welding pressing cylinder and the detector are all electrically connected with the controller;
the detector is arranged on the transverse plate of the frame and used for detecting whether a workpiece to be subjected to laser welding is arranged below the laser light through hole.
Further, the laser welding assistance apparatus further includes: a protective gas delivery pipe;
the protection gas conveying pipe is installed in the protection gas conveying channel, the gas inlet of the protection gas conveying pipe extends out of the gas inlet of the protection gas conveying channel and is connected with the protection gas output device, and the gas outlet of the protection gas conveying pipe is arranged at the gas outlet of the protection gas conveying channel to blow protection gas to a workpiece to be welded in a laser mode.
Further, the laser welding assistance apparatus further includes: a dust collection pipe;
the dust collection pipe is arranged in the dust collection channel, a dust collector connecting port of the dust collection pipe extends out of the dust collector connecting port of the dust collection channel and is connected with the dust collector, and a dust collection port of the dust collection pipe is arranged at the dust collection port of the dust collection channel.
Compared with the prior art, the invention has the beneficial effects that: a laser welding assistance device of the present invention includes: the frame, protection gas output device and dust arrester, the frame includes the frame diaphragm, set up the laser light through hole of vertical lining up on the frame diaphragm, with the laser welding station setting in the below of laser light through hole, the gas outlet that will protect gas transfer passage all sets up on the lateral wall that the light groove was led to laser with the dust absorption mouth of dust absorption passageway, and the dust absorption mouth setting of dust absorption passageway is in the top of protection gas transfer passage's gas outlet, stagger the gas outlet of dust absorption mouth and protection gas, let the gas outlet of protection gas be close to the welding position more. When the shielding gas output device and the dust collector are simultaneously started, even if the suction force of the dust collector is large, the shielding gas at the welding position cannot be completely sucked away, the welding position can be protected by enough shielding gas in the welding process, welding slag can be completely sucked away in the welding process, and the working efficiency of the laser welding auxiliary device and the quality of produced workpieces are improved.
Drawings
Fig. 1 is a schematic structural view of a laser welding assistance apparatus of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1, partially broken away;
fig. 3 is an enlarged schematic view of a region a in fig. 2.
In the drawings, each reference numeral denotes: 1. a frame; 11. a frame transverse plate; 12. a laser light-through hole; 13. a shielding gas delivery passage; 14. a dust collection channel; 2. a shielding gas guide plate; 3. welding a pressing block; 4. a gas storage space; 5. welding a compression cylinder; 6. a protective gas delivery pipe; 100. a workpiece to be laser welded.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, a laser welding assisting apparatus according to an embodiment of the present invention includes: the device comprises a frame 1, a protective gas output device and a dust collector;
Be provided with protection gas transfer passage 13 and dust absorption passageway 14 in the frame diaphragm 11, protection gas transfer passage 13's air inlet is connected with protection gas output device, protection gas transfer passage 13's gas outlet setting is on the lateral wall that the unthreaded hole 12 was led to in the laser, dust collection ware connector and the dust arrester of dust absorption passageway 14 are connected, dust absorption passageway 14's dust absorption mouth sets up on the lateral wall that the unthreaded hole 12 was led to in the laser, and dust absorption passageway 14's dust absorption mouth sets up the top at protection gas transfer passage 13's gas outlet.
The laser welding assistance device of the present embodiment includes: the frame, protection gas output device and dust arrester, the frame includes the frame diaphragm, set up the laser light through hole of vertical lining up on the frame diaphragm, with the laser welding station setting in the below of laser light through hole, the gas outlet that will protect gas transfer passage all sets up on the lateral wall that the light groove was led to laser with the dust absorption mouth of dust absorption passageway, and the dust absorption mouth setting of dust absorption passageway is in the top of protection gas transfer passage's gas outlet, stagger the gas outlet of dust absorption mouth and protection gas, let the gas outlet of protection gas be close to the welding position more. When the shielding gas output device and the dust collector are simultaneously started, even if the suction force of the dust collector is large, the shielding gas at the welding position cannot be completely sucked away, the welding position can be protected by enough shielding gas in the welding process, welding slag can be completely sucked away in the welding process, and the working efficiency of the laser welding auxiliary device and the quality of produced workpieces are improved.
Referring to fig. 3, further, the laser welding assisting apparatus further includes: and a shielding gas guide plate 2. The shielding gas guide plate 2 is arranged between the dust suction port of the dust suction channel 14 and the gas outlet of the shielding gas conveying channel 13 and is used for enabling a height difference to be formed between the dust suction port of the dust suction channel 14 and the gas outlet of the shielding gas conveying channel 13 in the height direction, and when a dust collector connected with the dust suction channel 14 starts large suction force to perform dust suction, the dust collector cannot completely suck away the shielding gas at the welding position due to a certain height difference between the dust suction port of the dust suction channel 14 and the gas outlet of the shielding gas conveying channel 13.
Still referring to fig. 3, the laser welding assistance device further includes: and the welding pressing block 3 comprises a pressing bottom plate and a connecting plate. The pressing bottom plate is fixedly connected in the laser light through hole 12 through a connecting plate, a vertical through light through groove is formed in the pressing bottom plate, a protective gas guide plate 2 is covered on the pressing bottom plate, a light through opening matched with the light through groove is formed in the protective gas guide plate 2, the periphery of the light through groove is matched with the periphery of the light through opening to form a protective gas outlet, and the gas outlet flow of the protective gas outlet is smaller than the conveying gas flow of the protective gas conveying channel 13.
Further, the protective gas guide plate 2 is matched with the compression bottom plate to form a gas storage space 4, a gas outlet of the protective gas conveying channel 13 is communicated with the gas storage space 4, and a protective gas outlet is communicated with the gas storage space 4. The arrangement of the air storage space 4 can prevent the turbulent flow phenomenon of the air flow.
Specifically, the circumferential edge of the notch of the light through groove of the pressing bottom plate is recessed downwards, the circumference of the light through opening extends downwards, and the downwardly recessed circumference of the light through groove and the downwardly extending circumference of the light through opening are matched to form a protective gas outlet in the circumferential direction. Because the protective gas outlet is very small, the gas outlet flow of the protective gas outlet is smaller than the conveying gas flow of the protective gas conveying channel 13, the protective gas can be continuously diffused in the gas storage space 4 and finally fills the whole gas storage space 4, and at the moment, the gas storage space 4 can simultaneously provide the protective gas for the welding position from the protective gas outlet in the circumferential direction, so that the surrounding gas supply is formed, and the better welding protection effect is achieved.
Still referring to fig. 1 and 2, the laser welding assistance device further includes: and welding the pressing cylinder 5. The cylinder body fixed mounting that the welding compressed tightly cylinder 5 is on external fixed body, and the output that the welding compressed tightly cylinder 5 is connected with frame diaphragm 11, and the output that the welding compressed tightly cylinder 5 moved along vertical direction to drive the welding briquetting 3 of being connected with frame diaphragm 11 and compress tightly or loosen the work piece 100 of treating laser welding. The external fixing body may be an external frame or an external wall.
Specifically, the number of the welding hold-down cylinders 5 is two. Two welding pressing cylinders 5 are respectively installed on two sides of the frame transverse plate 11, and output parts of the two welding pressing cylinders 5 are connected with the frame transverse plate 11.
The laser welding assistance device further includes: the controller, the detector, the shielding gas output device, the dust collector, the welding pressing cylinder 5 and the detector are all electrically connected with the controller. The detector is installed on the frame cross plate 11 and used for detecting whether the workpiece 100 to be laser welded is below the laser light through hole 12.
The controller is used for controlling the time of outputting the shielding gas of the shielding gas output device and the flow of the output shielding gas, controlling the opening time of the dust collector and the suction volume of the dust collector, controlling the output part of the welding pressing cylinder 5 to move along the vertical direction, and controlling the detector to detect whether the part below the laser light through hole 12 is the workpiece 100 to be subjected to laser welding.
The laser welding assistance device further includes: a protective air delivery pipe 6 and a dust suction pipe. The shielding gas conveying pipe 6 is installed in the shielding gas conveying passage 13, the gas inlet of the shielding gas conveying pipe 6 extends out of the gas inlet of the shielding gas conveying passage 13 and is connected with a shielding gas output device, and the gas outlet of the shielding gas conveying pipe 6 is arranged at the gas outlet of the shielding gas conveying passage 13 and blows shielding gas to the workpiece 100 to be welded by laser. The dust suction pipe is installed in the dust suction passage 14, a dust collector connection port of the dust suction pipe extends out from the dust collector connection port of the dust suction passage 14 and is connected with the dust collector, and a dust suction port of the dust suction pipe is arranged at the dust suction port of the dust suction passage 14.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A laser welding assistance device, characterized by comprising: the device comprises a frame, a shielding gas output device, a dust collector, a shielding gas guide plate and a welding pressing block;
the frame comprises a frame transverse plate, a laser light through hole which is vertically communicated is formed in the frame transverse plate, a workpiece to be subjected to laser welding is placed below the laser light through hole, and laser emitted by a laser welding machine irradiates the workpiece to be subjected to laser welding through the laser light through hole;
a protective gas conveying channel and a dust collection channel are arranged in the transverse plate of the rack, an air inlet of the protective gas conveying channel is connected with the protective gas output device, an air outlet of the protective gas conveying channel is arranged on the side wall of the laser light through hole, a dust collector connecting port of the dust collection channel is connected with the dust collector, a dust collection port of the dust collection channel is arranged on the side wall of the laser light through hole, and a dust collection port of the dust collection channel is arranged above an air outlet of the protective gas conveying channel;
the protective air guide plate is arranged between the dust suction port of the dust suction channel and the air outlet of the protective air conveying channel and is used for enabling a height difference to be formed between the dust suction port of the dust suction channel and the air outlet of the protective air conveying channel in the height direction;
the welding pressing block comprises a pressing bottom plate and a connecting plate;
the pressing bottom plate passes through connecting plate fixed connection in the unthreaded hole is led to the laser, set up the logical light groove of vertical link up on the pressing bottom plate, protection gas deflector lid is established on the pressing bottom plate, set up on the protection gas deflector with lead to light groove complex and lead to the light mouth, lead to the periphery of light groove with lead to the periphery cooperation of light mouth and form the protection gas outlet, the gas flow of giving vent to anger of protection gas outlet is less than the conveying gas flow of protection gas transfer passage.
2. The laser welding assistance device according to claim 1, wherein the shielding gas guide plate and the pressing base plate cooperate to form a gas storage space, and the gas outlet of the shielding gas transport passage communicates with the gas storage space and the shielding gas outlet communicates with the gas storage space.
3. The laser welding assistance device as claimed in claim 2, wherein a notch circumferential edge of the light passing groove of the pressing base plate is recessed downward, a circumferential edge of the light passing port extends downward, and the recessed circumferential edge of the light passing groove cooperates with the extending circumferential edge of the light passing port to form a shield gas outlet port in a circumferential direction.
4. The laser welding assistance apparatus according to claim 3, further comprising: welding a compression cylinder;
the welding pressing cylinder is characterized in that a cylinder body of the welding pressing cylinder is fixedly installed on an external fixing body, an output part of the welding pressing cylinder is connected with the transverse plate of the rack, and the output part of the welding pressing cylinder moves along the vertical direction to drive a welding pressing block connected with the transverse plate of the rack to press or loosen a workpiece to be welded in a laser mode.
5. The laser welding assistance apparatus according to claim 4, wherein the number of the welding hold-down cylinders is two;
the two welding compression cylinders are respectively arranged on two sides of the transverse plate of the rack, and the output parts of the two welding compression cylinders are connected with the transverse plate of the rack.
6. The laser welding assistance apparatus according to claim 5, further comprising: the protective gas output device, the dust collector, the welding pressing cylinder and the detector are all electrically connected with the controller;
the detector is arranged on the transverse plate of the frame and used for detecting whether a workpiece to be subjected to laser welding is arranged below the laser light through hole.
7. The laser welding assistance apparatus according to any one of claims 1 to 6, further comprising: a protective gas delivery pipe;
the protection gas conveying pipe is installed in the protection gas conveying channel, the gas inlet of the protection gas conveying pipe extends out of the gas inlet of the protection gas conveying channel and is connected with the protection gas output device, and the gas outlet of the protection gas conveying pipe is arranged at the gas outlet of the protection gas conveying channel to blow protection gas to a workpiece to be welded in a laser mode.
8. The laser welding assistance apparatus according to any one of claims 1 to 6, further comprising: a dust collection pipe;
the dust collection pipe is arranged in the dust collection channel, a dust collector connecting port of the dust collection pipe extends out of the dust collector connecting port of the dust collection channel and is connected with the dust collector, and a dust collection port of the dust collection pipe is arranged at the dust collection port of the dust collection channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591815.6A CN109954971B (en) | 2018-12-25 | 2018-12-25 | Laser welding auxiliary device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591815.6A CN109954971B (en) | 2018-12-25 | 2018-12-25 | Laser welding auxiliary device |
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| CN109954971A CN109954971A (en) | 2019-07-02 |
| CN109954971B true CN109954971B (en) | 2021-04-27 |
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| CN201811591815.6A Active CN109954971B (en) | 2018-12-25 | 2018-12-25 | Laser welding auxiliary device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112192025B (en) * | 2020-10-19 | 2023-06-27 | 厦门海辰储能科技股份有限公司 | Clamp, cover plate, fixing device and fixing method |
| CN113118623A (en) * | 2021-03-05 | 2021-07-16 | 浙江南都电源动力股份有限公司 | Aluminum-palladium welding equipment |
| CN114378446B (en) * | 2022-03-22 | 2022-07-29 | 苏州密尔光子科技有限公司 | Laser processing auxiliary device, method and laser equipment with device |
| CN218136063U (en) * | 2022-09-27 | 2022-12-27 | 宁德时代新能源科技股份有限公司 | Welding positioning device |
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| US4078167A (en) * | 1977-02-09 | 1978-03-07 | United Technologies Corporation | Welding shield and plasma suppressor apparatus |
| CN201776567U (en) * | 2009-08-14 | 2011-03-30 | 武汉金运激光股份有限公司 | Laser cutting machine with smoke dust suction device |
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| CN109954971A (en) | 2019-07-02 |
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Effective date of registration: 20220819 Address after: 518000 workshop 501, building 3, intelligent manufacturing center park, No. 12, Chongqing Road, Heping community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's lithium battery intelligent equipment Co.,Ltd. Address before: 518000 No. 9988 Shennan Road, Nanshan District, Shenzhen, Guangdong Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. |